CN1047166A - The circuit breaker that has the individual gap of adjusting the high and low limit of magnetic trip - Google Patents
The circuit breaker that has the individual gap of adjusting the high and low limit of magnetic trip Download PDFInfo
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- CN1047166A CN1047166A CN90101206A CN90101206A CN1047166A CN 1047166 A CN1047166 A CN 1047166A CN 90101206 A CN90101206 A CN 90101206A CN 90101206 A CN90101206 A CN 90101206A CN 1047166 A CN1047166 A CN 1047166A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
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Abstract
A kind of multi-phase circuit breaker (1) has a magnetic trip assembly (97), and it comprises that an adjusting lever (131) can be longitudinally-slidable to be limited to the gamut of lower bound from height at the tripping current of every utmost point.Adjust simultaneously by independent torsion spring (119) and be added to bias voltage on the magnetic trip assembly mobile armature (111), the adjustment screw of adorning on the adjusting lever (159) is used under high limit and lower bound setting value every utmost point is adjusted its armature and the fixing gap between the magnetic force member independently.One group of additional regulating screw (161) can insert in the adjusting lever, with adjusting play single in the gamut of adjusting at the spring bias voltage.
Description
Present invention generally relates to the circuit breaker that has the magnetic trip device, in more detail, relate to the device that has the adjusting play and be biased in the circuit breaker of the spring on this magnetic trip device.
Circuit breaker provides protection to electric power system under the electric fault situation, for example various overcurrent and short circuit.Usually circuit breaker comprises one by spring driven operating mechanism, and electric current by conductor is interdicted to disconnect the contact on electric according to the abnormal current of electric power system in this mechanism.Operating mechanism is discharged by the door bolt of threading off, and this dropout door bolt is successively by operating with the every mutually relevant tripping mechanism of electric power system.Usually tripping mechanism comprises a magnetic trip device, and this device comprises that the mobile armature that comes the fixedly magnetic force member of excitation and to attract to fixing magnetic force member direction by an electric current that flows through in the conductor is threaded off with operation and fastens with a bolt or latch.Releasing operation mechanism is successively fastened in dropout with a bolt or latch, to disconnect the electrical contact of each phase of electric power system.With a spring to mobile armature towards leaving fixedly magnetic force member direction bias voltage, thereby when no abnormal when using electric current, at armature with fixedly form a gap between the magnetic force member.
Usually, be provided with the device of adjustable current intensity, so that the magnetic trip device drives operating mechanism under this electric current.This adjustment can be put on the spring bias voltage of armature and/or finished with the size that the method for machinery is adjusted its gap by change, and the position that for example changes threaded screw or cam changes the spring bias voltage that puts on armature.These adjusting devices should make circuit breaker reach fine tuning, can move under desired fault current intensity to guarantee it.They can also be used to provide the setting range of circuit breaker trip.For example, a specified tripping operation setting range can be provided is that 500 peaces and height are limited between 1000 peaces in lower bound for circuit breaker.
United States Patent (USP) NO.4,691,182 are exactly one has the example of adjusting spring bias voltage and the every clearance between poles device of circuit breaker.The bias voltage of spring is adjusted every utmost point individually by a rotating cam, and this cam rotates a control lever adjustment by an extension spring and puts on the bias voltage that turns on the armature.By a threaded screw to armature and fixedly the gap between the magnetic force member independent adjusting is provided.In this circuit breaker, can not be respectively with the high limit of regulating spring with hang down extreme position and come the adjusting play.Because it is identical that all that set up by the spring bias voltage are adjusted with the gap setting value.
United States Patent (USP) NO.4,630,019 have announced a kind of circuit breaker, wherein the armature of magnetic trip device applies bias voltage by a bung flange shape torsion spring.In one of can being embedded into an arm of torsion spring on the supporting bracket in many grooves, the adjustment of spring bias voltage realizes.
Some circuit breakers of selling in other country wherein are provided with the device of the armature upper spring bias voltage of adjusting all each utmost point magnetic trip mechanisms of circuit breaker simultaneously.Armature and the fixing device in gap between the magnetic force member are adjusted in also comprising by a kind of threaded screw or rotating cam gear of having in these circuit breakers, but, known to the patent applicant, it is a kind of with the high limit of adjusting spring with hang down extreme position and adjust the device in its gap independently that these circuit breakers all can not provide.
Adopting public spring adjustment to select the circuit breaker range of operation to adjust with interior dropout for a circuit breaker all each utmost points is obviously easily, however for want of with high limit and lower bound spring bias voltage adjust carry out independent gap adjustment so that at present the circuit breaker of application limited at dropout setting range two ends the ability of threading off accurately be provided.For example the spring bias voltage is transferred to high limit drop-away value and is adjusted its gap, this just may guarantee circuit breaker a predetermined high limit value allow clearance with interior dropout.Because each an extremely public spring adjustment and independent gap adjustment are arranged, so this high limit setting value to all each utmost points just can satisfy this allow clearance, yet, when the bias voltage of spring is adjusted the lower bound drop-away value, then can not guarantee to provide desired allow clearance to lower bound dropout definite value to the gap of being adjusted for high limit dropout definite value.
So be necessary to propose for a kind of circuit breaker, be added in magnetic trip device armature upper spring bias voltage and set up high limit and lower bound dropout position by adjustment, and carry out the adjustment in gap simultaneously individually with such magnetic trip device.To a kind of like this circuit breaker preferably, the bias voltage of its medi-spring can be adjusted all each utmost points of circuit breaker simultaneously, yet can adjust respectively individually again the height in each gap limit and the lower bound position of adjusting.
More than these need and other various requirements, can satisfy by the present invention, include at the circuit breaker of invention: operating mechanism that can pin, and when it discharges, can operate in the disconnection electrical contact; One thread off door bolt it can be from the biasing rotated position to the dropout position to discharge this operating mechanism; And a magnetic trip assembly, this assembly comprises: a fixing magnetic force member; A mobile armature, this armature attracted to fixedly magnetic force member place by the effect of abnormal current, and makes the door bolt of threading off turn to the dropout position; Spring assembly, magnetic force member direction is biased on the armature to leaving fixedly, and is fixedly forming a gap between magnetic force member and the armature; And adjusting device, thereby being added to bias voltage on the armature by spring assembly adjustment, this device obtains to be limited to certain adjusting range of lower bound and independently in the gap of high limit and lower bound adjustment from height.
More particularly, adjusting device is a slide unit of activity point-blank, each is extremely gone up the bias voltage that can adjust spring simultaneously and each utmost point and adjusts the discrete lash adjusting device of independent adjusting play by slide unit being used for of driving in high limit and lower bound spring bias voltage at circuit breaker.Lash adjusting device to each utmost point comprises: one first ledge, and it can select supporting armature from slide unit with extending, and has only and adjust its gap when slide unit is near the high limit is adjusted the position; And one second ledge, it can select supporting armature from slide unit with extending, and has only and adjust its gap when slide unit is near lower bound is adjusted the position.
If necessary, one three ledge extremely relevant with each also can be selected supporting armature with extending, and adjusts crack therebetween under all setting values of spring bias voltage.
Reading following examples explanation in conjunction with the accompanying drawings will obtain to fully understand to the present invention.Wherein:
Fig. 1 is a plane graph of circuit breaker of the present invention;
Fig. 2 is an end view of Fig. 1 circuit breaker;
Fig. 3 is the vertical cross section that the III-III hatching line by Fig. 1 circuit breaker amplifies, and circuit breaker is in make position;
Fig. 4 is a vertical cross section of taking Fig. 1 circuit breaker part amplification of shell apart;
Fig. 5 is the vertical cross section that the part cut open along the identical hatching line of Fig. 3 in Fig. 1 circuit breaker is amplified, but circuit breaker is shown at open position;
Fig. 6 is the vertical cross section that the part cut open along the identical hatching line with 5 of Fig. 3 in Fig. 1 circuit breaker is amplified, but circuit breaker is shown in the dropout position;
Fig. 7 A is a circuit breaker part plane graph among Fig. 4, and illustrates that magnetic trip adjusting mechanism of the present invention is positioned at high limit setting;
Fig. 7 B is a plane graph similar in appearance to Fig. 7 A, but the explanation adjusting mechanism is positioned at the middle position of adjusting;
Fig. 8 be one along the circuit breaker vertical cross section of cutting open perpendicular to plane, Fig. 4 left side;
Fig. 9 A, B and C are schematic diagrames, illustrate that accordingly magnetic trip adjustment door bolt lays respectively at middle, high limit and the lower bound position of adjusting;
Figure 10 illustrates the plane graph of the part that circuit breaker is opened among Fig. 7 A and the B.
With reference to accompanying drawing, explanation is the circuit breaker 1 of a molded shell here, includes a magnetic trip assembly of adjusting and a little having modifying device for adjust threading off according to conduct of the present invention.Simultaneously, here circuit breaker 1 is that the circuit breaker of being used as a three-phase or three utmost points is described and illustrates, but principle of the present invention is equally applicable to single-phase or multi-phase circuit breaker, and is applicable to the AC and DC circuit breaker.
Inside critical piece as circuit breaker 1 includes: each is 19, one operating mechanisms 21 of one group of electrical contact and a tripping mechanism 23 of usefulness mutually.Every group of electrical contact comprises a bottom electrical contact 25 and a top electrical contact 27.With the subsidiary pushers 31 that an arc-chute 29 and a trough of belt are arranged of every group of electrical contact 19, this two all be conventional.Speak briefly, under failure condition, arc-chute 29 can be decomposed into a series of short electric arcs with formed single electric arc between the electrical contact 25 and 27 that separates, and has so just increased the needed total voltage of pilot arc, causes a kind of restriction to the fault current size.The pusher 31 of trough of belt is formed or is made up of the steel bar that is essentially U-shaped of electric insulation by one group of steel laminate patch that is essentially U-shaped that is placed in the electric insulation shell, and be placed in contact 25,27 around, increase the magnetic repulsion that divides open contact 25 and 27 so that concentrate on the magnetic field that produces under big short circuit current and the fault current situation, thereby quicken separating of they.Thereby electrical contact 25 causes producing the size that a sizable arc resistance has limited fault current with rapid separation of 27.Can be for the pusher 31 of arc-chute 29 and trough of belt at United States Patent (USP) NO.3, more detailed narration is arranged in 815,059.
Bottom electrical contact 25 comprises that one is fixed to U-shaped fixed part 33 on the base 5 by securing member 35, contact 37 is used for practically and electrically touching top electrical contact 27, is provided with an electric unsulating tape 39 in order to reduce the possibility that produces electric arc between the each several part of top electrical contact 27 and bottom electrical contact 25.The line termination 9 of outwards being drawn by base 5 comprises the whole end of parts 33.
Top electrical contact 27 comprises that a rotating contact arm 41 and one are used for practically and bottom electrical contact 25 electric contacted contacts 43.
In addition, toggle mechanism 47 includes a pair of last elbow connection rod 65, a pair of 67, one toggle spring catch 69 of elbow connection rod down and a last elbow connection rod follower peg 71.Following elbow connection rod 67 is fixed to by toggle coupling pin 73 on arbitrary side of rotatable contact arm 41 of top electrical contact 27.The two ends of pin 73 are placed and are stuck in the molded cross bar 49.So, just produce the motion of top electrical contact 27 and the motion of corresponding cross bar 49 by the motion of following elbow connection rod 67.After this manner because the operating mechanism 21 of the utmost point in the middle of the circuit breaker 1 or a phase makes the motion of top electrical contact 27, the effect of the cross bar 49 by this rigidity just make simultaneously with circuit breaker 1 other each utmost point or each in mutually relevant each electrical contact 27 do identical motion.
Last elbow connection rod 65 is formed rotationally by toggle spring catch 69 with following elbow connection rod 67 and is connected.Operation extension spring 57 is stretching between toggle spring catch 69 and the handle yoke 53, remains in extended state to cause spring 57, makes the external movement that the action of eccentric toggle mechanism 47 can response handle 13 and controls.
Upper links 65 comprises also and is used to accept and holds and sell 71 recess or groove 77 that pin 71 is keeping the position of a predetermined distance of separation passing carriage 61 with carriage 61 rotating shafts.From the spring tension of spring 57 pin 71 is remained on last elbow connection rod 65 and to be meshed.So the rotation of carriage 61 causes connecting rod 65 top each several parts to produce corresponding motion or displacement.
Carriage 61 has a groove or a ditch 79 of delimiting out a flat locking surface, this surfac topography become with in the upper end of elongated slot or the shape that is meshed of the formed flat chain face of carriage in the aperture in flat basically middle junction panel 83 81.Carriage 61 also includes one and is essentially flat handle yoke contact-making surface 85, and its profile constitutes and the rectifying surface 87 contacted shapes that form in handle yoke 53 upper ends that hang from above downwards.Threading off operating period, operating spring 57 makes handle 13 motions, and surface 85 and 87 make handle 13 be positioned at its " make position " (Fig. 3) and " open position " " dropout position " in the middle of (Fig. 5) (Fig. 6) threaded off to indicate circuit breaker 1.Operating mechanism 21 is put in the engagement on surface 85 and 87 again in addition, arrive a dropout position in succession, this is to be moved clockwise by the bias voltage that carriage 61 is being resisted operating spring 57, " open position " that (Fig. 6) arrives and cross it from its " dropout position " (Fig. 5) make on ditch 79 and aperture 81 this chain face can discharge.
Can be for being described in further detail of operating mechanism and the molded cross bar 49 relevant from United States Patent (USP) NO.4 with it, obtain in the specification of disclosed similar operations mechanism in 630,019.
The base 5 Zhong Vertical that Unitarily molded dropout door bolt 89 is supported on circuit breaker 1 molding outer casing to each dividing plate 101 in, each dividing plate makes three utmost points of circuit breaker separate (referring to Fig. 7).The door bolt 89 of threading off have be used to make drive rod 103(that every utmost point radially extends downwards referring to Fig. 3,5 and 6).Release lever 105 stretches out from the door bolt of threading off and is meshed with carriage junction panel 91.Carriage junction panel 91 assembles to such an extent that rotate around the axle that is parallel to the door bolt of threading off.An arm of beidirectional torsion spring 95 applies bias voltage to head on intermediate latch lever 81 to carriage junction panel 91.Another arm of torsion spring 95 is supporting Yi Vertical on the door bolt 89 of threading off to ledge 107, is biased in to thread off with counter-clockwise direction to latch, as shown in Figure 3.
In " closure " position, extension spring 57 attempts are with counter-clockwise direction rotating bracket 61 as shown in Figure 3 for circuit breaker.Yet, above-mentioned in this case attempt since carriage junction panel 91 that the release lever 105 on the door bolt 89 of threading off is held in place and the effect by middle junction panel 83 be prevented from.
Adjusting device 113 comprise a Zhi Cheng Zai Vertical on ledge 121 bung flange shape torsion spring 119(referring to Fig. 4).Torsion spring 119 has a spring arm 123, and it is supporting tongue piece protruding upward 125 on the armature 111, leaves fixedly magnetic force member 109 with this armature of bias voltage and forms a gap 127 betwixt.Another spring arm 129 of torsion spring 119 is meshed with an adjusting lever 131.Adjusting lever 131 comprises a lip that hangs from above 133, and the spring arm 123 of torsion spring 119 is facing to the tongue piece 125 on the lip 133 bias voltage armature 111.The last elastic arm 129 of torsion spring 119 is meshed with recess 135 in the lip 133.
For adjusting lever 131 can move point-blank and longitudinally, it is being supported by the first horizontal flanges platform 137 on the carriage 139.Pin 141 upright on each end enlarged 143 of adjusting lever 131 extends upward (referring to Fig. 7 and 10) by groove elongated in flange platform 139 145.
A rotating cam mechanism 149 is installed on the second flange platform 151 that can promote of carriage 139, be adjacent to an end of adjusting lever 131, this mechanism has pin 153 off-centre, that stand, and this pin is embedded in adjusting lever 131 and enlarges in the transverse groove 155 of an end 143.With a kind of instrument screwdriver insertion groove 157 rotating cam devices 149 for example, just can be point-blank and mobile longitudinally adjusting lever.As can be seen from Figure 1, rotating cam gear 149 can touch by the lid on the circuit breaker 13, does not need to dismantle the method that shell can be adjusted the position of adjusting lever 131 so provide.
Because of the spring arm 129 of the torsion spring 119 that each armature 111 applied bias voltage is meshed with groove 135 in the adjusting lever 131, the bias voltage on each utmost point armature can side by side be adjusted by means of the cam gear 149 that rotation can be changeed.Because adjusting lever 131 is the ultra-Right ends at its stroke, shown in Fig. 7 A, is added on the armature 111 by the spring bias voltage of spring 119 with maximum.This just provides high limit setting value to each setting range of circuit breaker 1 magnetic trip.
For circuit breaker 1 each utmost point is limit fine tuning individually under setting value at this height, the first cover projection is taked screwed screw 159a, 159b and 159c to be passed in adjusting lever 131 upper flange platforms 133 and is supported the back side of the tongue piece 125 on the relevant armature.Give prominence to length beyond flange platform 133 owing to adjust screw 159a, 159b and 159c, then at armature 111 with fixedly the gap between the magnetic force member 109 127 can be to every extremely independent adjusting.So, when adjusting lever is adjusted to high limit setting value simultaneously with all three spring tensions of extremely going up, can utilize screw 159a, 159b and 159c to limit the position of adjusting to carry out fine tuning respectively to the height of each utmost point.
When adjusting lever is moved to Far Left, the spring bias voltage on each armature 111 is reduced to the required lower bound setting value of magnetic trip.Because adjusting lever 131 is on this position, the second cover ledge adopts the form of threaded screw 161a, 161b and 161c to twist the flange platform 133 of adjusting lever 131 and aim at the tongue piece 125 on the relevant armature, and allows each utmost point to circuit breaker 1 adjusting play respectively under lower bound is adjusted place value.
Will find out from schematic diagram 9A, 9B and 9C, adjust screw 159 and 161 and be spaced apart, so that magnetic trip is high to be limit when adjusting the position when adjusting lever is positioned, screw 159 is only aimed at the tongue piece 125 of armature 111, is shown among Fig. 9 B.On this position, adjust and do not act in the gap of 161 pairs of armature 111 of screw.On the contrary, because adjusting lever 131 is positioned at the magnetic trip lower bound position of adjusting, be shown in Fig. 9 C, screw 161 is aimed at tongue piece 125, to provide adjustment to gap 127.The lateral edges 163 of armature 111 upper tongues 125 is with respect to angle of plane inclination of armature 111, so that a cam surface to be provided, when adjusting lever approached high limit and lower bound respectively and adjusts the position, this cam surface guiding armature 111 entered into by the position of adjusting, the gaps of screw 159 and 161 foundation.Screw 161 and 159 allows to carry out gap adjustment individually when high limit and lower bound spring bias voltage setting value, and every utmost point is adjusted respectively.
Additional a cover screw 165a, 165b and 165c can be arranged between screw 159 and 161, are adjacent to each utmost point and the gamut by adjusting lever 131 strokes, are supporting the tongue piece of relevant armature with aiming at.This cover additional screw keeps contacting with relevant tongue piece 125 in the gamut that the spring bias voltage is adjusted.So additional flexibility is provided in carrying out adjusting play 127.Because adjusting lever 131 is arranged on the middle part of its stroke, shown in Fig. 9 A and 7B, aim at tongue piece 125 accordingly, and the gap promptly is placed in the gamut that the spring bias voltage adjusts so just adjust screw 165a, 165b and 165c.
Conductive path between bimetal leaf 99 lower ends and electrical contact 27 tops is got up with any suitable means for engaging by a kind of multiply annealed copper wire, and for example bottom and the cross bar 49 that is connected to bimetal leaf 99 with braid 183 finished with the top of interior electrical contact 27.After this manner, by circuit breaker 3 between termination 9b and 11b via bottom electrical contact 25, top electrical contact 27, multiply flexible conductor 183, bimetal leaf 99 and conductive component 167 provide the path of an electricity.
The adjustment of cam gear 177 has changed the response time of circuit breaker to the low-intensity overcurrent.Because the magnetic force member 109 that bimetal leaf is fixed surrounds, the electric current that is conducted by bimetal leaf is fixedly producing a magnetic field in the magnetic force member, and this magnetic field suction armature 111.By the rotation to cam gear 149, by the adjustment of adjusting lever 131, the bias voltage of spring is adjusted, and has changed armature and has attracted to the fixedly current strength of magnetic force member correspondence.Provide for high limit by screw 159,161 and 165, under lower bound and the corresponding position of adjusting of all spring bias voltages to the fine tuning of drop-away current.
When work, circuit breaker 1 is placed in make position as shown in Figure 3.A kind of electric current that surpasses the magnetic trip setting value of being set up by the spring bias voltages of cam gear 149 and adjustment screw 159,161 and 165 adjustment, fixedly producing a magnetic field in the magnetic force member 109, it enough makes armature 111 pull to it in the direction of the clock, is shown among Fig. 3.The door bolt of threading off is rotated in the clockwise direction until carriage junction panel 91 slides off dropout control lever 105 in the lower end of armature 111.This allows that with regard to having discharged carriage 61 operation extension spring 57 is rotated as shown in Figure 3 carriage 61 inhour, thereby causes toggle mechanism 47 position shown in Figure 6 of transferring, and therefore disconnects one group of electrical contact 19.As previously mentioned, so just cause the rotation of cross bar 49, each contact 19 of circuit breaker 1 every utmost point is promptly opened in this rotation.
In a like fashion, a kind of lasting low-intensity electric current makes crooked finger piece 169 is taken to the cam 171 of dropout control lever 105 on the door bolt 89 of threading off of bimetal leaf 99 contact, and fastens 89 and with the above-mentioned mode tripping circuit breaker of being discussed about magnetic trip with a bolt or latch thereby rotate to thread off.
Because circuit breaker is threaded off, as shown in Figure 6, contact is disconnected.Move handle 13 to " " position as shown in Figure 5, circuit breaker 1 promptly is reset in disconnection with hand.With regard on 61 to positions of rotating bracket, executed the carriage junction panel 91 of bias voltage there by locking torsion spring 95 like this, junction panel 83 is meshed with the chain surface of carriage 61 further groove 79 in the middle of impelling.Chain torsion spring 95 also makes the counter-clockwise rotation of the door bolt of threading off, and the effect of dropout control lever 105 is meshed and snapped into locked position up to carriage junction panel 91 is threaded off door bolt 89 by quilt on, as shown in Figure 5.So tripping mechanism 23 is lockable again, and be ready to carry out the combined floodgate of circuit breaker to make position, as shown in Figure 3 by moving handle 13.So just cause toggle mechanism 47 inhour to rotate the centers of crossing, thus closed each utmost point of circuit breaker respectively organize electrical contact.
Adjust a little if wish the instantaneous trip of adjusting circuit breaker 1, an available screwdriver or other instrument are inserted in the rotatable cam gear 149 and rotate adjusting lever 131 and can realize on the amount of desirable direction and requirement.When delay tripping is adjusted in hope, an available instrument is inserted in the cam gear 177, and be rotated pivoting control lever arm 173, thus axially move to thread off door bolt 89 be adjusted at the finger piece 169 on the bimetal leaf 99 and door bolt 89 actuating arms 103 of threading off on inclined-plane 171 between the gap.To each extremely armature 111 and fixedly the gap between the magnetic force member 109 127 can adjust individually, and can carry out independently by adjusting screw 159 and 161 accordingly for the height of circuit breaker 1 limit and the lower bound position of adjusting, or carry out FR adjustment by adjustment screw 165.When proofreading and correct circuit breaker 1 usually in manufactory, the adjustment in these gaps carried out.
Though specific embodiments of the invention describe in detail, can understand those technical skilled people, according to disclosed whole technology, can produce various modification and change to those details.Therefore publishing of this specific device means that as just a kind of illustrative example be not limited to scope of the present invention, this scope refers to following content and any and its equivalent of claims.
Claims (7)
1, a kind of circuit breaker that is used for responding electric power system conductor abnormal current, described circuit breaker has: be operable in the electrical contact between make position and the open position, circuit by conductor when make position is connected, and the circuit by conductor when open position is interdicted; The operating mechanism that can pin disconnects described electrical contact when it discharges; The door bolt of threading off, thus it can discharge described operating mechanism to the dropout position from a kind of biased rotated position; And a magnetic trip assembly, described trip assembley therefor has: a fixing magnetic force member; A mobile armature, when abnormal current passed through described conductor, this armature attracted to fixedly magnetic force member place, rotates described dropout and fastens the dropout position with a bolt or latch; Spring assembly, it is biased on the described armature and also forms a gap betwixt away from described fixedly magnetic force member; It is characterized in that, an adjusting device, thus the bias voltage that is added on the described armature by described spring assembly adjustment obtains from a high setting range that is limited to a lower bound, and under described high limit and lower bound setting value, adjust described gap independently.
2, circuit breaker as claimed in claim 1 includes: pivot device, described mobile armature is contained in and is used on the pivot around a pivoted, and wherein said adjusting device includes: a slide unit, be arranged essentially parallel to described pivot and carry out point-blank moving, adjust the bias voltage that is added on described armature between the position to adjust in described high limit and lower bound; And the lash adjusting device that drives by described slide unit, and include first and can select the ledge that extends, it is corrected to and selectively supports described armature, and the bias voltage of only adjusting described armature when described slide unit is approximately to the described high described gap of going to adjust when limitting setting value, with second can select the ledge that extends, it is corrected to is supporting described armature, and the bias voltage of only adjusting described armature when described slide unit goes to adjust described gap during approximately to described lower bound setting value.
3, circuit breaker as claimed in claim 2, wherein: described armature has a part that is essentially the plane, it extends in being arranged essentially parallel to the plane of described pivot, the ledge that described slide unit and described first and second can be selected to extend is supporting this planar section, described planar section has cam face on its lateral edges, when described slide unit move point-blank and drive described select one of ledge of extending to the described planar section of described armature on time, this cam face is promptly guided described first and second ledges that can select to extend to being meshed with described planar section.
4, circuit breaker as claimed in claim 2, wherein said spring assembly comprise a torsion spring, and this torsion spring has: one first spring arm, and it supports described armature and described slide unit of bias voltage and described lash adjusting device; And with the engagement of described slide unit and movable adjust the bias voltage that is added on the described armature with this.
5, circuit breaker as claimed in claim 4, wherein said torsion spring are that bung flange shape centers on the axle transverse to described pivot, and are contained on the described fixedly magnetic force member.
6, circuit breaker as claimed in claim 5, wherein: described armature has a part that is essentially the plane, it extends in being arranged essentially parallel to the plane of described pivot, the ledge that described slide unit and described first and second can be selected to extend is supporting this planar section, described planar section has cam face on its lateral edges, when described slide unit move point-blank and drive described select one of ledge of extending to the described planar section of described armature on time, this cam face is promptly guided described first and second ledges that can select to extend to being meshed with described planar section.
7, circuit breaker as claimed in claim 2, wherein said lash adjusting device comprises that one is loaded in the 3rd on the described slide unit and can selects the ledge that extends, and this slide unit is corrected at all bias voltage setting value places of described spring assembly and selectively supports and adjust described gap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US320647 | 1989-03-08 | ||
| US07/320,647 US4958136A (en) | 1989-03-08 | 1989-03-08 | Circuit breaker with individual gap adjustment at high and low settings of magnetic trip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047166A true CN1047166A (en) | 1990-11-21 |
| CN1021169C CN1021169C (en) | 1993-06-09 |
Family
ID=23247331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90101206A Expired - Fee Related CN1021169C (en) | 1989-03-08 | 1990-03-07 | Circuit breaker with individual gap adjustment at high and low settings of magnetic trip |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4958136A (en) |
| JP (1) | JPH02281530A (en) |
| CN (1) | CN1021169C (en) |
| AU (1) | AU630153B2 (en) |
| BR (1) | BR9001080A (en) |
| CA (1) | CA2010695A1 (en) |
| IE (1) | IE61893B1 (en) |
| NZ (1) | NZ232630A (en) |
| PH (1) | PH26113A (en) |
| ZA (1) | ZA901549B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565146A (en) * | 2018-06-21 | 2018-09-21 | 句容华源电器设备有限公司 | Transformer capacity and pressure regulating switching mechanism |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5394126A (en) * | 1994-04-18 | 1995-02-28 | Eaton Corporatiion | Circuit breaker with improved magnetic trip assembly |
| US5428329A (en) * | 1994-05-24 | 1995-06-27 | Eaton Corporation | Springclip means for a latchable operating mechanism on a circuit breaker |
| US5471184A (en) * | 1994-07-13 | 1995-11-28 | Eaton Corporation | Circuit breaker |
| US5613275A (en) * | 1996-02-27 | 1997-03-25 | Eaton Corporation | Adjusting knob assembly with discrete positioning |
| US5872495A (en) * | 1997-12-10 | 1999-02-16 | Siemens Energy & Automation, Inc. | Variable thermal and magnetic structure for a circuitbreaker trip unit |
| US6747534B1 (en) * | 1999-08-18 | 2004-06-08 | Eaton Corporation | Circuit breaker with dial indicator for magnetic trip level adjustment |
| US6274833B1 (en) * | 2000-02-18 | 2001-08-14 | Siemens Energy & Automation, Inc. | Plug-in trip unit joint for a molded case circuit breaker |
| US6255925B1 (en) * | 2000-02-18 | 2001-07-03 | Siemens Energy & Automation, Inc. | Thermal-magnetic trip unit with adjustable magnetic tripping |
| US6788174B1 (en) | 2004-02-03 | 2004-09-07 | Eaton Corporation | Adjustable magnetic trip unit and a circuit breaker incorporating the same |
| US20080122563A1 (en) * | 2006-08-28 | 2008-05-29 | Ls Industrial Systems Co., Ltd. | Instantaneous trip mechanism for mould cased circuit breaker |
| GB2441356B (en) * | 2006-08-29 | 2008-10-29 | Ls Ind Systems Co Ltd | Instantaneous trip mechanism for mould cased circuit breaker |
| US20090115556A1 (en) * | 2007-11-05 | 2009-05-07 | Square D Company | Divided adjustable armature for a circuit breaker |
| KR101206540B1 (en) * | 2011-12-28 | 2012-11-30 | 현대중공업 주식회사 | Instant adjustable trip device of circuit breakers |
| CN104205275B (en) * | 2012-03-12 | 2017-10-20 | 西门子公司 | Breaker trip-proof device, system and operating method |
| FR3007573B1 (en) * | 2013-06-20 | 2015-07-17 | Schneider Electric Ind Sas | TRIGGER AND METHOD FOR MANUFACTURING SUCH TRIGGER |
| CN106941058A (en) * | 2017-04-10 | 2017-07-11 | 许胜� | A kind of breaker of this trip gear of trip gear and application |
| CN108257832B (en) * | 2018-04-02 | 2019-06-07 | 浙江智美电气有限公司 | A kind of adjustable small-sized heavy current breaker of drop-away current |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631376A (en) * | 1984-09-28 | 1986-12-23 | Westinghouse Electric Corp. | Molded case circuit breaker with an improved arc gas external venting system |
| US4594491A (en) * | 1984-09-28 | 1986-06-10 | Westinghouse Electric Corp. | Molded case circuit breaker with a trip mechanism having an intermediate latch lever |
| US4630019A (en) * | 1984-09-28 | 1986-12-16 | Westinghouse Electric Corp. | Molded case circuit breaker with calibration adjusting means for a bimetal |
| US4691182A (en) * | 1986-04-30 | 1987-09-01 | Westinghouse Electric Corp. | Circuit breaker with adjustable magnetic trip unit |
-
1989
- 1989-03-08 US US07/320,647 patent/US4958136A/en not_active Expired - Lifetime
-
1990
- 1990-02-13 PH PH40048A patent/PH26113A/en unknown
- 1990-02-13 IE IE50390A patent/IE61893B1/en not_active IP Right Cessation
- 1990-02-16 AU AU49811/90A patent/AU630153B2/en not_active Ceased
- 1990-02-21 NZ NZ232630A patent/NZ232630A/en unknown
- 1990-02-22 CA CA002010695A patent/CA2010695A1/en not_active Abandoned
- 1990-02-28 ZA ZA901549A patent/ZA901549B/en unknown
- 1990-03-07 BR BR909001080A patent/BR9001080A/en active Search and Examination
- 1990-03-07 CN CN90101206A patent/CN1021169C/en not_active Expired - Fee Related
- 1990-03-08 JP JP2057857A patent/JPH02281530A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565146A (en) * | 2018-06-21 | 2018-09-21 | 句容华源电器设备有限公司 | Transformer capacity and pressure regulating switching mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| US4958136A (en) | 1990-09-18 |
| IE61893B1 (en) | 1994-11-30 |
| BR9001080A (en) | 1991-02-26 |
| ZA901549B (en) | 1990-12-28 |
| JPH02281530A (en) | 1990-11-19 |
| NZ232630A (en) | 1992-10-28 |
| CN1021169C (en) | 1993-06-09 |
| PH26113A (en) | 1992-02-06 |
| AU4981190A (en) | 1990-09-13 |
| AU630153B2 (en) | 1992-10-22 |
| IE900503L (en) | 1990-09-08 |
| CA2010695A1 (en) | 1990-09-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |